Sunday, August 26, 2012

Monitoring the Brawley earthquakes in Arizona

The Arizona Broadband Seismic Network, run by AZGS, is recording the earthquake swarm following the magnitude 5.3 and 5.5 quakes near Brawley south of California's Salton Sea.

Dr. Jeri Young, in our Phoenix office, forwarded the image at right of most of our stations, including 113A, our closest station to Yuma, that have captured the M 5.3 Brawley event.

Our 113A station is about 60 km east of Yuma and about 165 km ESE of the 5.3 epicenter. The quake was picked up (first P arrival) by this station at about 25 seconds after the first shock at 19:31:47 UTC and 12:31:47 MST.